UK council issues urgent warning over dangerous caterpillars | UK | News
Poisonous caterpillars, whose hairs can trigger breathing problems and painful skin irritation, have sparked an urgent public warning after they were spotted in Surrey. Woking Borough Council has urged residents to avoid contact with oak procession moth (OPM) caterpillars and their nests, warning that the insects can pose a risk to both people and pets.
Caterpillars, which are active between late spring and early summer, are most commonly found on oak trees. Although small in size, they are covered with thousands of tiny hairs that contain toxins that can cause health problems if touched or inhaled.
Symptoms include itchy skin rashes, sore throat, eye irritation and breathing difficulties, according to the council.
Residents are advised not to touch the caterpillars or their nests, keep children and animals away from affected trees, and not attempt to remove the nests themselves.
Insects can be identified by their distinctive habits, such as moving from nose to tail, often traveling in long lines along tree trunks and branches. They also build silky white, web-like nests on oak trees.
The warning comes as OPM caterpillars enter the peak period of their annual life cycle. This species has been the focus of ongoing monitoring and management efforts in some parts of southern England for several years due to the health risks posed by its poisonous plumage.
Repeated infestations can weaken oak trees by shedding their leaves, making them more vulnerable to disease and environmental stress.
Major Ellen Nicholson, Woking City Council’s Green Spaces Portfolio Holder, said: “We understand that sightings of the oak procession moth can be worrying for residents.
“Although risks are generally low if you keep your distance, it is important that people know how to recognize caterpillars and what to do when they see them.
“If you see them please avoid contact and report your sightings so their nests can be safely removed.
“Residents can play an important role in helping the relevant authority manage the problem by reporting sightings and maintaining a safe distance.”
Authorities are asking anyone who discovers an OPM nest to report it to the appropriate authority, providing the exact location and, if possible, a photograph.
The council stressed that dealing with any infestation should be left to specialist contractors as disturbing the nests could release more toxic plumes into the environment.
Residents who spend time outdoors near oak trees in the coming weeks are encouraged to remain vigilant and familiarize themselves with signs of infestation.
Anyone who notices the caterpillars is advised to stay away until the insects can be dealt with safely and to ensure that children and pets do the same.
